Docs Merge Request

Changes

fixed hyperlink markdown syntax issue with quickstart.md
sso_quickstart.md was accidentally deleted / made blank, reverted that change to restore it. (the following are additional changes after restoring the sso_quickstart.md, which won't correctly show up as a diff, since it was accidentally deleted.)
updated logic so BIG_BANG_VERSION would reference a latest version instead of a pinned version, added a comment about how to pin to a version + the last version the guide was tested against.
updated dependencies k3d, helm, kustomize, kubectl to same versions the quickstart.md had recently been updated to.
updated k3d cluster create flags to account for breaking changes from k3d v4.x -> v5.x
removed --values $HOME/bigbang/docs/example_configs/opa-overrides-k3d.yaml reference to external file, and instead embedded the contents of that file in the how to guide, should be more resilient incase the file ever gets renamed or moved.
corrected a | sudo tee -a ~/.ssh/config --to be--> | tee -a ~/.ssh/config after realizing an edge case where it'd fail + that it wasn't needed.
re-added valid wildcard ingress cert into keycloak's values (it had been moved to a new location, which means this how to guide was probably broken for a few months until this refresh occurred.)
split some long markdown sections in 2, and removed apostrophes in some sections to improve ability to copy paste.

I did an E2E retest of the guide after finishing all commits / tweaks.

Edited Apr 06, 2022 by Christopher McGrath